| 摘要 |
<p>PURPOSE:To remove bubbles generated on an inner face of a lining, improve accuracy in an inner diameter size and eliminate need of subsequent processing of an inner peripheral face. CONSTITUTION:A circular empty chamber 16 is formed between a core 13 and an outer cylinder 14, and also bubble reservoirs 19 connected to the circular empty chamber 16 are formed on both sides of the core 13, while the circular empty chamber 16 is filled with a lining material 17, which is to be heated and melted, and the core 13 is rotated together with a rotation axis 11. When rotation speed reaches a predetermined region, a Weissenberg effect works to discharge bubbling gas to the bubble reservoirs 19.</p> |
